With advent in microcontroller/computer the best reliable,fast,economical and accurate system for metering, are the use of online computer for instrumentation(metering), protection and control, with microcontroller based back up modules, where needed. Generally, used in load dispatch centers. Can refer my publications.
SMART METERING SYSTEM - Smart meters are the next generation of electricity or gas meters and the difference compared to the old meters is that they are able to transmit and receive data. Smart metering is one way to help customers understand their electricity consumption and help them to save energy. Through a quick feedback and monthly bills, with statistics over the electricity used, the customers will get a better understanding of their electricity consumption. Customers should be able to analyze and optimize the electricity consumption and the only way of making this possible is by a quicker feedback on the consumption. The supplier or distribution system operators will profit from smart metering since they do not need to dispose so much expensive peak power. Through load variable tariff customers can profit as well, since they can optimize their electricity consumption against the given prices. The identified reduction of operating costs for the utilities can be in the range of 30 to 50%.